Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Yuichiro Nanen"'
Autor:
Takashi Nakamura, Yuichiro Nanen, Takui Sakaguchi, Seigo Mori, Masatoshi Aketa, Tsunenobu Kimoto, Hirokazu Asahara
Publikováno v:
IEEE Transactions on Electron Devices. 64:4167-4174
Novel 3-kV 4H-SiC reverse blocking (RB) metal–oxide–semiconductor field-effect transistors (MOSFETs) have been demonstrated for high-voltage bidirectional switching applications. To achieve RB capability, a series Schottky barrier diode structure
Publikováno v:
Materials Science Forum. 858:885-888
Dynamic and static characteristics of SiC power MOSFETs at high temperature up to 380°C were investigated. Investigated devices have exhibited a behavior as a normally-off MOSFET even at such high temperature as 380°C. Temperature dependence of the
Autor:
Takayoshi Shimura, Tsunenobu Kimoto, Heiji Watanabe, Takuji Hosoi, Yoshihito Katsu, Yuichiro Nanen
Publikováno v:
Materials Science Forum. 858:599-602
We evaluated the effect of NO annealing on hole trapping characteristic of SiC metal-oxide-semiconductor (MOS) capacitor by measuring flatband voltage (VFB) shifts during a constant negative gate voltage stress under UV illumination. Under low stress
Publikováno v:
2017 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK).
SiC devices are expected to operate at much higher temperature than Si devices. However, commercially available SiC devices are limited to the temperature almost same as Si devices. In order to operate SiC devices at high temperature, it is necessary
Publikováno v:
Materials Science Forum. :943-946
Characteristics of high-voltage lateral silicon carbide metal-oxide-semiconductor field-effect transistors (MOSFETs) with various reduced surface field (RESURF) structures were simulated. Breakdown voltage was enhanced from 5300 V for single-zone RES
Autor:
Yuichiro Nanen, Tsunenobu Kimoto, Masanobu Yoshikawa, Hirohumi Seki, Tsuneyuki Yamane, Muneharu Kato
Publikováno v:
Applied Spectroscopy. 67:542-545
We report the abnormal behavior of longitudinal optical (LO) phonon in a silicon dioxide (SiO2) film on a 4H-SiC bulk epitaxial substrate using an attenuated total reflection (ATR) technique. The peak frequency of the LO phonon in the ATR spectrum wa
Publikováno v:
2016 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK).
Junction temperature of SiC DMOSFETs at device failure in unclamped inductive switching test has been estimated to be 960 K, and mechanism of the avalanche failure was discussed. The junction temperature was estimated from the extrapolation of temper
Publikováno v:
Materials Science Forum. :445-448
Post-oxidation annealing (POA) in Ar at high temperature has been performed during fabrication of 4H-SiC metal-oxide-semiconductor field-effect transistors (MOSFETs). The gate oxides were formed by thermal oxidation followed by N2O annealing, then an
Autor:
Gerhard Pensl, Yuichiro Nanen, Svetlana Beljakowa, Tsunenobu Kimoto, Lia Trapaidze, Bernd Zippelius, Michael Krieger
Publikováno v:
Materials Science Forum. :487-490
The authors investigated the effect of preannealing on N-/Al-coimplanted and over-oxidized Metal-Oxide-Semiconductor Field Effect Transistors (MOSFETs). The preannealing process causes a decrease of the Hall mobility and the effective mobility, and a
Autor:
Michael Krieger, Yuichiro Nanen, Tsunenobu Kimoto, Bernd Zippelius, Valeri Afanas'ev, Anton J. Bauer, Svetlana Beljakowa, Gerhard Pensl
Publikováno v:
Materials Science Forum. :463-468
Two electrical measurement techniques are frequently employed for the characteri- zation of traps at the SiO2/SiC interface: the thermal dielectric relaxation current (TDRC) and the conductance method (CM). When plotting Dit as a function of the ener